Mueller Industries, Inc. is a leading manufacturer of copper tube and fittings; brass and copper alloy rod, bar and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; plastic fittings and valves; refrigeration valves and fittings; and fabricated tubular products. Mueller's operations are located throughout the United States and in Canada, Mexico, Great Britain, and China. Mueller's business is importantly linked to the construction of new homes; the improvement and reconditioning of existing homes and structures; and the commercial construction market which includes, office buildings, factories, hotels, hospitals, etc.

Producers of metal products including carbon steel, piping, snowplows, structural rebar, sheet metal, and wiring. Most of the products, as evidenced by the name, involve steel and iron components or ingredients. Their products are used in an enormous number of industries including automotive, appliance, construction, and welding. Since they are manufacturers, their revenue derives from the sales of the products they make, but since steel and iron are used in so many areas, their products are in demand in many different fields and locations.